Why are functions marked "New" in Documentation Center not working?

Questions
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1

I set up my Raspberry Pi last week and installed all updates. Mathematica is version 10.0. Any of the functions marked “New” in the Documentation Center are not working in Mathematica. When I type them into a Mathematica notebook the text for these functions stays blue, indicating that Mathematica does not recognize them as functions. I’ve seen that there is a version 10.3, but it doesn’t seem to be available for Raspbian. Is the version I’m using the reason these functions aren’t working?

2

The online documentation reflects the latest version of Mathematica, 10.3.1. The Raspberry Pi release is still at version 10.0.2, although an update is in the works.